Re: [RFC] carl9170: Fix memory accounting when sta is in power-save mode.

[Christian Lamparter <chunkeey@googlemail.com>]

On Saturday 25 February 2012 21:12:52 Johannes Berg wrote:
> On Sat, 2012-02-25 at 11:32 +0200, Jouni Malinen wrote:
> > On Fri, Feb 24, 2012 at 03:09:02PM +0100, Johannes Berg wrote:
> > > On Fri, 2012-02-24 at 15:01 +0100, Nicolas Cavallari wrote:
> > > > Hostapd already does that¹ ... after the association response is acked.
> > > 
> > > Ok maybe then we should send out assoc resp etc. frames and not subject
> > > them to PS queueing? Jouni?
> > 
> > We should try to follow the clarified description of management frame
> > buffering in P802.11-REVmb/D12.0 (i.e., soon to be published IEEE Std
> > 802.11-2012). (Re)Association Response frame is not a bufferable
> > management frame and as such, it needs to be sent out without being
> > subject to PS queuing.
> 
> Ah yes, you mentioned before that this was being clarified but I forgot
> about it again. I'll take a look.
> 
Actually, I think I found the problem in carl9170 [writing a patch atm].
[I forgot to check IEEE80211_TX_CTL_POLL_RESPONSE and
IEEE80211_TX_CTL_CLEAR_PS_FILT flags].

[A simple fix: we could set something like TX_CTL_IGNORE_PS  
(now known as TX_CTL_POLL_RESPONSE) on outgoing
auth & (re-)assoc frames] 

Regards,
	Chr